LABORATORY TOOLS
Which safety tool should be worn to protect the eyes during a laboratory activity involving chemicals?
safety googles
What are the tiny, finger-like projections in the small intestine that increase the surface area for nutrient absorption called?
villi
TRUE OF FALSE: Proteins are mainly used by the body for building strong bones and teeth.
FALSE
proteins: used for building and repairing tissues
calcium: used for building strong bones and teeth
Which structure controls what substances enter and leave the cell?
cell membrane
In pea plants, the allele for purple flower color (P) is dominant over the allele for white flower color (p). If a pea plant has the genotype Pp, what flower color will it have?
purple
What tool is used to stir or mix substances inside a beaker without scratching the glass?
glass rod
TRUE OF FALSE:
Saliva contains an enzyme called peristalsis that starts the digestion of carbohydrates in the mouth.
FALSE
amylase is the enzyme
peristalsis is the wave-like muscle contractions that move food through the digestive tract
Which mineral is needed by the body for the proper formation of hemoglobin in red blood cells?
iron
Which organelle contains DNA and controls the overall activities of the cell?
nucleus
What is the difference between an organism's genotype and its phenotype?
Genotype is the genetic makeup (allele combination), while phenotype is the observable physical trait.
What tool is used to pick up small solid objects such as coins or pieces of metal during an experiment?
forceps
The stomach produces what specific acid that helps break down proteins and kill harmful bacteria?
hydrochloric acid
Which vitamin helps strengthen the immune system and promote healthy skin and gums?
vitamin C
Which organelle is responsible for synthesizing proteins?
ribosome
In a cross between a heterozygous tall pea plant (Tt) and a short pea plant (tt), what is the probability (in percentage) of producing tall pea plants?
50%
Which laboratory tool is used to measure the exact volume of a liquid accurately?
graduated cylinder
What are the three parts of the small intentine?
the duodenum, the jejunum, and the ileum
True or False: Vitamins and minerals provide the body with energy in large amounts, similar to carbohydrates.
false
A cell produces proteins that need to be sorted, packaged, and transported to different parts. Which organelle is involved in this process?
Golgi apparatus
In a corn cross between a homozygous dominant parent (RRSS) and a heterozygous parent (RrSs), what are all the resulting possible genotypes of the offspring?
RRSS 25%
RRSs 25%
RrSS 25%
RrSs 25%
Which glassware has a narrow neck and is commonly used for mixing, heating, and swirling solutions?
erlenmeyer flask
The bile is secreted in _______ and stored in ________ until it is needed for digestion.
liver, gallbladder
What dietary component aids digestion and helps prevent constipation, even though it is not fully digested by the body?
fiber
A cell is producing many proteins that need to be processed and transported. The cell contains a network of membranes involved in producing, processing, and transporting these materials. Which organelle is mainly involved?
endoplasmic reticulum
after crossing RRSS x RrSs, you will get these genotypes:
RRSS 25%
RRSs 25%
RrSS 25%
RrSs 25%
what is the probability of producing:
a) yellow, sweet corn kernels?
b) purple, starchy corn kernels?
a) 0%
b) 100%